Me ajudem por favor Resolva As Expressões: 38) 24÷(15-7)= 39) 40÷(8-3)= 40) 45÷(12-9)=

Sabendo disso, vamos resolver as expressões dadas:

\[\eqalign{ & 38){\text{ }} \cr & \cr & 24 \div \left( {15 - 7} \right) = \cr & 24 \div \left( 8 \right) = 24 \cr & \cr & 39) \cr & \cr & 40 \div \left( {8 - 3} \right) = \cr & 40 \div \left( 5 \right) = 8 \cr & \cr & 40) \cr & \cr & 45 \div \left( {12 - 9} \right) = \cr & 45 \div \left( 3 \right) = 15 }\]